• A female northern Sumatran rhino lived 32 years and 8 months in captivity, a record age. She died in the London Zoo in 1900.
• Female Sumatran rhinos reach sexual maturity at 6–7 years, males at 20 years. Their pregnancy lasts about 15–16 months.

The Sumatran rhinoceros, also known as the Asiatic two-horned rhinoceros or hairy rhino, has a typical lifespan of from 30 to 45 years, although the maximum recorded lifespan was 32 years and 10 months, with a theoretical lifespan ranging from 23 years and 5 months to 30 years and 1 month. The species reaches sexual maturity at an age between 5 and 12 years. A Sumatran rhino’s young are born with their eyes open and begin walking immediately. The embryo develops inside the mother for approximately 16 months. The young lives with its mother, drinks milk, and gradually begins to eat plants. An adult animal lives independently and can produce offspring, a stage lasting from 7 to 45 years.